package com.ithuaxin.array;

public class Test3 {
    public static void main(String[] args) {
        int arr[] = {1,2,3,4,5};
        int sum = 0;
        for (int i = 0; i < arr.length; i++) {
            sum = sum + arr[i];
        }
        System.out.println("这个数组里所有数据的和为："+sum);
    }
}
